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电子转移反应     
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  electron transfer reaction
     Kinetic Investigation of Electron Transfer Reaction between trans - [(en)_2(NO_2)Co(O_2CC_5H_5N)]~(2+)/Fe(Ⅱ)
     trans-[(en)_2(NO_2)Co(O_2CC_5H_5N)]~(2+)/Fe(Ⅱ)间电子转移反应动力学及机理研究
短句来源
     Studies on Kinetics of the Electron Transfer Reaction of Fe(Ⅲ)[TP(o-NO_2)TBP]Cl with Ascorbic Acid
     Fe(Ⅲ)[TP(o-NO_2)TBP]Cl与抗坏血酸的均相电子转移反应动力学
短句来源
     THE EFFECT OF NONBRIDGING LIGANDS ON THE ELECTRON-TRANSFER REACTIONS OF COMPLEXES --The electron transfer reaction between Cis-[Co(en)_2Cl_2]~+ or cis-[Co(en)_2(OH_2)Cl]~(2+) and Iron(Ⅱ)
     非桥基配体对配合物的电子转移反应的影响——Cis-[Co(en)_2Cl_2]~+和Cis-[Co(en)_2(OH)_2Cl]~(2+)与Fe(Ⅱ)间电子转移反应
短句来源
     Photoinduced Electron Transfer Reaction between N,N dimethylaniline and 1,1 Dichloro 2 phenylcyclopropane
     N,N-二甲基苯胺和1,1-二氯-2-苯基环丙烷的光诱导电子转移反应
短句来源
     2. Potential Energy Surface: On the basis of the analysis of the potential energy surface the character of the electron transfer reaction, the component of the potential energy surface and the key factors that affect the potential energy have been pointed out.
     2.势能面(Potential Energy Surface):在分析电子转移反应势能面特征的基础上指出了反应势能面所包含的主要成分以及影响势能面的主要因素。
短句来源
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  electron transfer reactions
     Theoretical Study of Self- Exchange Electron Transfer Reactions for Co(H_2O)_6~(2+/3+) System
     Co(H_2O)_6~(2+/3+)体系电子转移反应动力学的理论研究
短句来源
     Study of Electron Transfer Reactions Between Co (phen) _3~(3+) and Co (Ⅱ) Complexes by Polarimetry
     旋光法研究Co(phen)_3~(3+)同Co(Ⅱ)络合物的电子转移反应
短句来源
     The electron transfer reactions between[Co(N_3)(NH_3)_5]~(2+) and Fe(Ⅱ)were determined in mixed solvents of water and alcohols,such as methanol ethanoland l-propanil.
     本文研究了水—醇(如甲醇、乙醇和正丙醇等)混合溶剂中[Co(N_3)(NH_3)_5]~(2+)与 Fe(Ⅱ)间电子转移反应
短句来源
     Single Electron Transfer Reactions
     单电子转移反应
短句来源
     Photoinduced electron transfer reactions of anthracene with DEA and PTZ occur in the membrane phase of the CTAB/n -C5H11OH/H2O microemulsion.
     在TritonX一1 00/正癸醇(n一C,oHZ,OH)/H 20体系中,蕙与DEA、PTZ的光诱导电子转移反应发生在微乳液的膜相中,与DEA相比,PTZ是激发态葱的更有效的碎灭剂。
短句来源
更多       
  electron-transfer reaction
     Electron-Transfer Reaction of Lanthanides(Ⅰ) ——-Kinetics and Mechanism of the Spontaneous Reduction of Pr(Ⅳ),Tb(Ⅳ) Complexes with Periodate in KOH Solution
     镧系元素的电子转移反应(Ⅰ)——Ln(Ⅳ)IO_6~-在KOH水溶液中还原反应的动力学和机理
短句来源
     ELECTRON-TRANSFER REACTION OF INO PAIRS: REDUCTION OF Cis-[Co(etaH)(en)_2]Br_3 by [Fe(CN)_6]~(4-)
     离子对的电子转移反应[Fe(CN)_6]~(4-)对顺式—三溴乙醇胺双乙二胺合钴(Ⅲ)的还原作用
短句来源
     Photoinduced electron-transfer reaction of anthracene with phenothiazine(PTZ) is studied in the TritonX100/n-C10H21OH/H2Osystemand the location of anthracene and PTZis discussed.
     用荧光光谱法研究了壬基苯酚聚氧乙烯醚(TritonX-100)/正癸醇(n-C10H21OH)/H2O体系中蒽和吩噻嗪(PTZ)的光诱导电子转移反应,探讨了蒽和PTZ在微乳液中的定位.
短句来源
  charge transfer reactions
     The results showed that the ITIES supported by micro-cavity electrode would be a useful and efficient tool to investigate the charge transfer reactions at liquid/liquid interfaces.
     实验证明该方法操作简便易行 ,是研究液 /液界面上电子转移反应的有效工具
短句来源

 

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      electron transfer reaction
    It is suggested that the main effect of small additives on the photochemical chain reaction is due to a change in the reactivity of ionradical pairs, the primary products of a photoinduced electron transfer reaction at the initiation step.
          
    Regression Analysis of Rate Parameters for the Photoinduced Electron Transfer Reaction
          
    Experimentally, it was proved that there is no spin forbiddance in the photoinduced electron transfer reaction between these reactants.
          
    The initaition mechanism involves the electron transfer reaction between the sulfite ion and excited riboflavin.
          
    Potential-Barrier Profile for the Adiabatic Electron Transfer Reaction in the Condon Approximation
          
    更多          
      electron transfer reactions
    The H2O → CO2, H2O → MV (involving PSII and PSI) and H2O → BQ + FeCy (chiefly dependent on PSII) electron transfer reactions were inhibited upon incubation of the cells with MV, SA, or AT.
          
    Direct and reverse electron transfer reactions demonstrate different specificity for NADH and NAD+ analogs: the nicotinamide part of the molecule is significant for reduced nucleotide binding.
          
    Competition of concatenated and thermally activated medium reorganization in photoinduced electron transfer reactions
          
    A general empirical approach allowing one to describe the kinetics and evaluate the mechanism of the electrode electron transfer reactions is offered.
          
    The conclusion is drawn that most electron transfer reactions involving organic compounds are reversible, and that the irreversibility of the net electrode reaction is due to the irreversibility of subsequent chemical and electrochemical stages.
          
    更多          
      electron-transfer reaction
    The use of a photoinduced electron-transfer reaction for optical limiting in fullerene-containing solutions
          
    Fructose as a reducing agent for in situ generation of Cu(I) species via an electron-transfer reaction in copper-catalyzed livin
          
    When the NaY sample was irradiated under dry oxygen, 4-methoxybenzaldehyde (4) was given as the major product through photoinduced electron-transfer reaction on excitation of the contact charge-transfer complexes between the guest molecules and O2.
          
    Stable s-butyl trifluoroacetyl nitroxide (3) has been generated in electron-transfer reaction of O-benzoyl-N-s-butylhydroxylamine (1) and trifluoroacetyl peroxide (2) in F113 (CFCl2CF2Cl) solution at room temperature.
          
    The photo-induced electron-transfer reaction of 4,4'-bipyridine (BPY) with triethylamine (TEA) in acetonitrile is studied by laser flash photolysis.
          
    更多          
      其他


    Results of EPR investigation of the electron transfer between strong electron accepting agent (tetracyano-ethylene, TCNE), strong oxidizing agents (quinones) or dual electron donor-acceptors (aromatics with condensed rings) and γ-Al2O3 or HF treated γ-Al2O3 are reported. These suggest that there are rather strong electron accepting sites on the surface of γ-A12O3, onto which aromatics of condensed rings are being adsorbed and changed into cationic free radicals whose concentration magnitude is in the order of...

    Results of EPR investigation of the electron transfer between strong electron accepting agent (tetracyano-ethylene, TCNE), strong oxidizing agents (quinones) or dual electron donor-acceptors (aromatics with condensed rings) and γ-Al2O3 or HF treated γ-Al2O3 are reported. These suggest that there are rather strong electron accepting sites on the surface of γ-A12O3, onto which aromatics of condensed rings are being adsorbed and changed into cationic free radicals whose concentration magnitude is in the order of 1015 spins/gm. Meanwhile, there are also strong electron donating sites on the surface of r-Al2O3, onto which TCNE and quinones are being adsorbed and trans formed into anionic free radicals, whose concentration magnitude is in the order of 1017 spins/gm. When γ-Al2O3 was treated with HF to contain 8.4% of F, its corresponding electron accepting strength is increased two order while its corresponding electron donating strength is decreased one order of magnitude.

    本文报道了用电子顺磁共振法考察γ-Al_2O_3和经HF交换的F-γ-Al_2O_3分别与强吸电子剂(四氰乙烯)、强氧化剂(醌类)和具有电子授受二性物(稠环芳烃)进行电子转移反应的结果。认为在γ-Al_2O_3表面上存在着具有较强电子受体特性中心,稠环芳烃吸附于其上并把π电子转移给它,生成正离子自由基,其强度为10~(15)自旋数/克量级;同时也存在着具有强电子授体特性中心,四氰乙烯和醌氢醌吸附于其上并夺得其电子,生成负离子自由基,其强度为10~(17)自旋数/克量级。经过氟交换后的F-γ-Al_2O_3的吸电子的能力增加两个数量级,而给电子的能力则相应地降低一个数量级。

    Some phthalocyanines have been synthesized and their fluorescence spectra studied. The fluorescence quantum yields have been measured, the value of which are 0.7, 0.3, 0.025 for magnesium, zinc and cobalt, respectively.Study of photosensitized reduction reaction together with the fluorescence quenching, the quenching rate constant K q ( 1 × 1010 sec-1 ) has been calculated. The result shows that the rate of the first step of photosensitized reduction, i.e. electron transfer reaction, is diffusion-controlled....

    Some phthalocyanines have been synthesized and their fluorescence spectra studied. The fluorescence quantum yields have been measured, the value of which are 0.7, 0.3, 0.025 for magnesium, zinc and cobalt, respectively.Study of photosensitized reduction reaction together with the fluorescence quenching, the quenching rate constant K q ( 1 × 1010 sec-1 ) has been calculated. The result shows that the rate of the first step of photosensitized reduction, i.e. electron transfer reaction, is diffusion-controlled. Since EDTA can not quench the fluorescence of phthalocyanine, the following scheme for the reduction of RV2+ is proposed:The photosensitization activities of phthalocyanines are in the order of Mg > Zn> Co, while the activity of butyl viologen is higher than that of methyl viologen.

    本文报道了我们合成的几种酞菁化合物的荧光光谱,并测定了它们的荧光量子产率φ_f。酞菁镁化合物的φ_f值最高可达0.7,酞菁锌化合物的φ_f值为0.3左右,酞菁钴的φ_f值很低,结合光敏化还原紫精的研究,求得它们的荧光被甲基紫精淬灭的速率常数k_q>1×10~(10)秒~(-1),说明光敏化还原的第一步,即电子转移反应是扩散控制过程。由于EDTA对酞菁化合物荧光无淬灭效应,我们认为酞菁光敏化还原反应的历程是: (1) (2) (3)光敏化还原反应以镁酞菁的活性最高,锌酞菁次之,铜酞菁、钴酞菁几乎无光活性。丁基紫精的还原效果比甲基紫精好。

    In hexamethylphosphoric triamide (HMPA), four representative diacyl peroxides, namely, benzoyl peroxide (1), cyclopropylformyl peroxide (2), lauroyl peroxide (3) and trifluoroacetyl peroxide (4), all decompose at rates much higher than those expected from their unimolecular thermal decomposition, and the corresponding carboxylic acids are formed in high yields (74~97%). Furthermore, several radical colligation products formed from HMPA molecules can be identified. Evidently, the initial step in the reaction...

    In hexamethylphosphoric triamide (HMPA), four representative diacyl peroxides, namely, benzoyl peroxide (1), cyclopropylformyl peroxide (2), lauroyl peroxide (3) and trifluoroacetyl peroxide (4), all decompose at rates much higher than those expected from their unimolecular thermal decomposition, and the corresponding carboxylic acids are formed in high yields (74~97%). Furthermore, several radical colligation products formed from HMPA molecules can be identified. Evidently, the initial step in the reaction between a diacyl peroxide and the "solvent" HMPA involves an electron transfer with the latter acting as the donor.

    四种代表性的酰基过氧化物,苯甲酰过氧化物(1),环丙基甲酰过氧化物(2),月桂酰过氧化物(3)和三氟乙酰过氧化物(4),在HMPA(溶剂)中分解,生成高产率的相应羧酸(6),同时,又检测到HMPA的羧基化产物(8),烷基化产物(9)及脱氢二聚体(10)。各过氧化物的分解速度和产物鉴定表明,HMPA能作为电子给予体与上述酰基过氧化物发生单电子转移反应

     
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